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Finding the Fourth Proportional to 61,130.81, 84,375.52 and 37,270.64

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Solution

The fourth proportional to 61,130.81, 84,375.52 and 37,270.64 is: 51,442.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,130.81 : 84,375.52 = 37,270.64 : x
  2. Step 2: Convert to fraction form
    61,130.81/84,375.52 = 37,270.64/x
  3. Step 3: Cross multiply
    61,130.81x = 84,375.52 × 37,270.64
  4. Step 4: Simplify right side
    61,130.81x = 3,144,729,115.68
  5. Step 5: Solve for x
    x = 3,144,729,115.68/61,130.81
  6. Step 6: Final answer
    x = 51,442.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.